JPH012768A - How to heat molten metal - Google Patents
How to heat molten metalInfo
- Publication number
- JPH012768A JPH012768A JP62-157173A JP15717387A JPH012768A JP H012768 A JPH012768 A JP H012768A JP 15717387 A JP15717387 A JP 15717387A JP H012768 A JPH012768 A JP H012768A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- heating element
- heating
- heater device
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229910052751 metal Inorganic materials 0.000 title claims description 92
- 239000002184 metal Substances 0.000 title claims description 92
- 238000010438 heat treatment Methods 0.000 claims description 134
- 238000000034 method Methods 0.000 claims description 39
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 36
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 26
- 238000009749 continuous casting Methods 0.000 claims description 12
- 239000000395 magnesium oxide Substances 0.000 claims description 12
- 239000000919 ceramic Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910021344 molybdenum silicide Inorganic materials 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- MTPVUVINMAGMJL-UHFFFAOYSA-N trimethyl(1,1,2,2,2-pentafluoroethyl)silane Chemical compound C[Si](C)(C)C(F)(F)C(F)(F)F MTPVUVINMAGMJL-UHFFFAOYSA-N 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 241000277269 Oncorhynchus masou Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- DTDCCPMQHXRFFI-UHFFFAOYSA-N dioxido(dioxo)chromium lanthanum(3+) Chemical compound [La+3].[La+3].[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O.[O-][Cr]([O-])(=O)=O DTDCCPMQHXRFFI-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- UZLYXNNZYFBAQO-UHFFFAOYSA-N oxygen(2-);ytterbium(3+) Chemical compound [O-2].[O-2].[O-2].[Yb+3].[Yb+3] UZLYXNNZYFBAQO-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- SIXSYDAISGFNSX-UHFFFAOYSA-N scandium atom Chemical compound [Sc] SIXSYDAISGFNSX-UHFFFAOYSA-N 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910002076 stabilized zirconia Inorganic materials 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000035922 thirst Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229940075624 ytterbium oxide Drugs 0.000 description 1
- 229910003454 ytterbium oxide Inorganic materials 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［ａ業上の利用分野］
本発明は容器内に保持した鉄鋼などの高温の金属溶湯を
加熱する金ａ溶湯の加熱方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application in Industry A] The present invention relates to a method for heating molten metal such as steel held in a container at a high temperature.
本発明にかかる金属溶湯の加熱方法は、連続鋳造方法で
使用されるタンデイシュ内に保持された金属溶湯を加熱
して、その金属溶湯の温度調整を行なう際に利用するこ
とができる。The method for heating molten metal according to the present invention can be used when heating molten metal held in a tundish used in a continuous casting method and adjusting the temperature of the molten metal.
［従来の技術］
２；属の溶解工場などでは、溶解した溶湯を次工程で処
理するまでの間、容器内に保持しておくことがある。し
かし容器内の溶湯は冷める問題がある。例えば、連続鋳
造方法では、溶湯を水冷鋳型に注入する前にタンデツシ
ュ内で溶湯を受ける関係上、タンデツシュ内での溶湯の
温戊が低下する問題がある。[Prior Art] 2; In some melting factories, melted metal is sometimes held in a container until it is processed in the next process. However, there is a problem that the molten metal inside the container cools down. For example, in the continuous casting method, there is a problem that the temperature of the molten metal in the tundish decreases because the molten metal is received in the tundish before being poured into the water-cooled mold.
そこで、容器で保持している溶湯の所要温度を確保すべ
く、溶湯を加熱するにあたっては、従来より、？Ｖ器内
の溶湯に電極を浸漬し、溶湯自体に電流を直接流してジ
ュール熱で溶湯自体を発熱させる方法が提供されている
。また容器内の金属溶湯を誘導加熱する方法も提供され
ている。また容器の上方にプラズマトーチを設置して、
容器内の金属溶湯をプラズマ加熱プる方法も提供されて
いる。Therefore, in order to ensure the required temperature of the molten metal held in the container, when heating the molten metal, conventional methods have been used. A method has been proposed in which an electrode is immersed in the molten metal in a V vessel, and a current is passed directly through the molten metal itself to cause the molten metal to generate heat using Joule heat. A method of induction heating a molten metal in a container is also provided. Also, a plasma torch is installed above the container,
A method of plasma heating a molten metal in a container has also been provided.
［発明が解決しようとする問題点］
上記した浴温自体のジュール熱で溶湯を加熱する方法の
場合には、溶湯の電気抵抗率は小であるので、かなり大
きな電流量を必要とする。また、溶湯を誘導加熱したり
、溶湯をプラズマトーチで加熱する方法の場合には、特
別な装置を必要とする。[Problems to be Solved by the Invention] In the case of the method of heating the molten metal using the Joule heat of the bath temperature itself, since the electrical resistivity of the molten metal is small, a considerably large amount of current is required. Further, in the case of methods of induction heating the molten metal or heating the molten metal with a plasma torch, special equipment is required.
本発明は上記した実情に鑑みなされたものであり、その
目的は、発熱体をもつヒータ装置を使用し、発熱体を発
熱して高温となったヒータ装置で金属溶湯を加熱する金
属溶湯の加熱方法を提供するにある。The present invention was made in view of the above-mentioned circumstances, and its purpose is to heat molten metal by using a heater device having a heating element and heating the molten metal with the heater device which generates heat from the heating element and becomes high temperature. We are here to provide you with a method.
［問題点を解決するための手段］
本発明にかかる金属溶湯の加熱方法は、容器内に保持さ
れた金ｉ溶湧に一面が接触する発熱体と発熱体の他面に
設けられた電極部からなるヒータ装置を使用し、Ｍ極部
と金属ｗＩｉ１３との間に電圧を印加して発熱体の肉厚
方向に電流を流して発熱させ発熱して１３温となったヒ
ータ装置で金属溶湯を加熱することを特徴とするもので
ある。[Means for Solving the Problems] The method for heating molten metal according to the present invention includes a heating element whose one side is in contact with the molten gold held in a container, and an electrode section provided on the other side of the heating element. A voltage is applied between the M pole part and the metal wIi13, and a current is passed in the thickness direction of the heating element to generate heat. It is characterized by heating.
ヒータ装置の数は適宜選択できるが、１本でも、２木で
も、それ以上でもよい。印加する電圧値、電流値は、金
属溶湯の比熱、金属溶湯のＩＩ湯温度容器内に保持され
ている金属溶湯の８原などに応じて適宜選択されるが、
金属溶湯が鉄鋼の溶湯である場合には、ヒータ装置の数
は３本、電圧は１００■〜１Ｋｖ程度、ｍ１ｌｆｌＧ、
ｔｌ ００Ａ 〜３ＫＡ稈度とすることができる。金属
溶湯が容器内で流れをもつ場合には、ヒータ５Ａ置の発
熱体に金属溶湯か当たるように、ヒータ装置の配置、溶
湯の流れを設定することが望ましい。この場合、金属溶
湯の流れに対して発熱体をほぼ直角状態に配ｒ１するこ
とが望ましい、この場合発熱体の熱は金属溶湯に効果的
に伝達される。The number of heater devices can be selected as appropriate, and may be one, two, or more. The voltage value and current value to be applied are appropriately selected depending on the specific heat of the molten metal, the temperature of the molten metal held in the II hot water temperature container, etc.
When the molten metal is molten steel, the number of heater devices is 3, the voltage is about 100 - 1Kv, m1lflG,
The culm degree can be tl 00A to 3KA. When the molten metal flows in the container, it is desirable to arrange the heater device and set the flow of the molten metal so that the molten metal hits the heating element located at the heater 5A. In this case, it is desirable to arrange the heating element r1 approximately at right angles to the flow of the molten metal, in which case the heat of the heating element is effectively transferred to the molten metal.
発熱体は、非金属系発熱材料、金属系発熱材料で形成で
きる。非金属系発熱材料としては、導電性セラミックス
を主成分として形成できる。Ｓｔ性セラミックスとして
は具体的に、ジルコニア（ＺｒＯ２）、ジルコニアとマ
グネシアの混合体、炭化けい１（ＳｉＣ）、ランタンク
ロメート（Ｌａｃｒｏ３）、ケイ化モリブデン（ＭＯ８
ｉｔ）、窒化チタニウム（ＴｉＮ）、炭化チタニウム（
ＴｉＣ）等を主成分としたものがある。ただし、上記発
熱材料の中から金属溶湯の加熱温度、ヒータ装置の使用
場所の１ｌｌｌ！竹、還元性などの雰囲気、発熱材料の
耐熱性、発熱材料の高温における耐衝撃性を考慮して選
択するべきである。The heating element can be formed from a non-metallic heating material or a metallic heating material. The non-metallic heat generating material can be formed using conductive ceramics as a main component. Specifically, St ceramics include zirconia (ZrO2), a mixture of zirconia and magnesia, silicon carbide (SiC), lanthanum chromate (Lacro3), and molybdenum silicide (MO8).
titanium nitride (TiN), titanium carbide (it), titanium nitride (TiN), titanium carbide (
There are those whose main components are TiC) and the like. However, from among the heat generating materials mentioned above, there are 1llll of heating temperatures for molten metal and where to use the heater device! The material should be selected in consideration of the atmosphere such as bamboo and reducing properties, the heat resistance of the heat generating material, and the impact resistance of the heat generating material at high temperatures.
発熱体がジルコニアを主成分とする場合には、安定化剤
として酸化カルシウム（Ｃａｂ）、マグネシア（ＭｑＯ
）、酸化イツトリウム（ＹｚＯ３）、酸化イッテルビウ
ム（ＹｂｘＯ３）、Ｍ化スカンジウム（ＳＣｚＯ３）を
数％〜数１０％程度添加し、転移を回避した安定化ジル
コニア、準安定ジルコニアを使用することが望ましい。When the heating element is mainly composed of zirconia, calcium oxide (Cab) and magnesia (MqO) are used as stabilizers.
), yttrium oxide (YzO3), ytterbium oxide (YbxO3), or scandium Mide (SCzO3) in an amount of several percent to several tens of percent is preferably added to stabilized zirconia or metastable zirconia to avoid transition.
このようにすれば転移に伴う彫版を回避することができ
、発熱体の歪みを抑１ｂＩｊ ｉすることができる。In this way, engravings caused by transfer can be avoided, and distortion of the heating element can be suppressed.
ところで、発熱材料は、温度が上昇しても発熱体の抵抗
値は変化しないか、あるいは、抵抗値が増大する正特性
を示すことが望ましい。このように温度の上昇に伴い発
熱材料の抵抗値が増大する正特性を示す場合には、発熱
体に高温部が生じた場合に、その高温部は抵抗値が高く
なる。そのため、高温部よりも温度の低い部分を電流は
流れ、したがって発熱体の全体にわたって均一に発熱さ
せるに都合がよい。発熱材料は、温度の上界に伴い抵抗
値が低下する負特性をもつ、１ｇ合には、発熱体に高温
部が生じた場合に、その高温部は抵抗値が低くなる。そ
のため、ｅ＆温部よりも温度の低い部分は、電流が流れ
にくくなり、高温部に電流は流れやすくなる。したがっ
て高温部は増々高温となり、発熱体の発熱むらが生じる
ので、望ましくない。その場合は、発熱体で溶湯撹拌す
るか、溶湯への伝熱を高める必要がある。Incidentally, it is desirable that the heat generating material exhibits a positive characteristic in which the resistance value of the heat generating element does not change or increases even when the temperature rises. In this way, when the heat generating material exhibits a positive characteristic in which the resistance value increases as the temperature rises, when a high temperature part is generated in the heat generating element, the resistance value of the high temperature part becomes high. Therefore, the current flows through the portions where the temperature is lower than the high temperature portion, which is convenient for uniformly generating heat throughout the heating element. The heat generating material has a negative characteristic that the resistance value decreases as the upper limit of the temperature increases.For 1g, when a high temperature part is generated in the heat generating element, the resistance value of the high temperature part becomes low. Therefore, it is difficult for current to flow in a portion whose temperature is lower than the e&temperature portion, and current is more likely to flow in a high temperature portion. Therefore, the high-temperature portion becomes increasingly hot, which causes uneven heating of the heating element, which is undesirable. In that case, it is necessary to stir the molten metal with a heating element or to increase heat transfer to the molten metal.
発熱体の全抵抗Ｒ（Ω）は、発熱材料の固有低抗値ρ（
ΩＣｒＴＩ ）と発熱体の肉ＪＩ７ｔ（ｃｍ）と発熱体
の面積Ｓ（ｃｍ’）とに影響され、したがって１の形状
と肉ＩＩ７などに影響され、Ｒ＝（ρ・ｔ）／Ｓとなる
。発熱材料は、その固有抵抗値ρが１〜５Ｘ１０３ （
Ωｃｍ）程１（のものを採用づることができる。The total resistance R (Ω) of the heating element is determined by the inherent low resistance value ρ (
ΩCrTI), the thickness JI7t (cm) of the heating element, and the area S (cm') of the heating element, and therefore the shape of 1 and the thickness II7, etc., and R=(ρ·t)/S. The heat generating material has a specific resistance value ρ of 1 to 5×103 (
A value of about 1 (Ωcm) can be adopted.
／Ｊ Ｊ３、発熱体をセラミックスで形成する場合には
、発熱体の固有抵抗値は、導電性セラミックスにＪＦｌ
４Ｐ市性セラミツクスを配合し、配合９１合を調節す
ることにより変えることができる。/J J3, When the heating element is made of ceramics, the specific resistance value of the heating element is JFl
It can be changed by blending 4P city ceramics and adjusting the blending ratio.
発熱体をけンミックスで形成プる場合には、導電性ヒラ
ミックスの粉末を所定形状に成形した後、所定温度に加
熱して焼結Ｊることにより形成される。例えば、セラミ
ックスの粉末をボールミル、１騒動ミルなどで充分に扮
砕、混合して原料セラミックス粉末を調整する。そして
、その原料セラミックス粉末を加圧成形して圧密体を形
成する。その後、必要な１４合には乾燥Ｔ稈を行ない、
高調に加熱して焼結７る。加圧成形は、プレス加圧法、
静水圧加圧法、ホウドブレス法などの公知の手段を採用
することができる。焼結は、非酸化性雰囲気、不活性雰
囲気または高真空下で行なうとよい。When the heating element is formed using Kenmix, it is formed by molding conductive Hiramix powder into a predetermined shape and then heating it to a predetermined temperature and sintering it. For example, raw ceramic powder is prepared by thoroughly crushing and mixing ceramic powder in a ball mill, one-stroke mill, or the like. Then, the raw ceramic powder is pressure-molded to form a compacted body. After that, dry T culm is performed for the necessary 14 times,
Heat to high temperature and sinter 7. Pressure molding is press pressure method,
Known means such as the hydrostatic pressurization method and the Houd breath method can be employed. Sintering is preferably carried out in a non-oxidizing atmosphere, an inert atmosphere or under high vacuum.
電極部は、金属浴温の熱で溶融しないように溶融温度が
金１ｉ！ ’１１ ＦＱの温度Ｊ：りも高いことが必要
である。そのため電極部はカーボンで形成することが望
ましい。また電気抵抗の小さいＳ電性セラミックスを電
極部として使用することもできる。このＪ：うな場合に
は、電極部と発熱体を一体的に成形し、そのまま焼成す
ることも可能である。The melting temperature of the electrode part is gold 1i! so that it does not melt due to the heat of the metal bath temperature. '11 FQ temperature J: It is necessary that the temperature is also high. Therefore, it is desirable that the electrode portion be made of carbon. Furthermore, S-conductive ceramics with low electrical resistance can also be used as the electrode portion. In this case, it is also possible to integrally mold the electrode part and the heating element and then sinter them as they are.
なお、本発明にかかる金属溶湯の加熱方法では、発熱体
の発熱で金属溶湯を加熱する際に、アルゴンガスなどの
ガスを溶湯に送りこんでバブリングしたり、溶湯を機械
的に撹拌したりすれば、金属溶湯の温度を均一にするに
有利である。また、本発明にかかる金属溶湯の加熱方法
では、容器に保持した金属溶湯の貯溜ｍを検出するγ線
しベルン１などのセンサを配設するとともに、センサの
検出信号に応じて発熱体への電流を制御する１ｉｌＪ
０ＩＩＫ置を配設し、容器に保持されている金属溶湯の
変動量に応じて１ＩＩＩＩＩＩＩ装置が発熱体へ流す電
流量を制御する構成としてもよい。このようにすれば金
属溶湯の温度調整をより一層精度よくできる。In addition, in the method for heating molten metal according to the present invention, when heating the molten metal by heat generation from a heating element, gas such as argon gas may be sent into the molten metal to cause bubbling, or the molten metal may be mechanically stirred. This is advantageous in making the temperature of the molten metal uniform. In addition, in the method for heating molten metal according to the present invention, a sensor such as a gamma ray sensor Bern 1 is provided to detect the accumulation m of molten metal held in a container, and a sensor such as a gamma ray detector Bern 1 is provided to detect the accumulation m of the molten metal held in a container. 1ilJ to control the current
A configuration may also be adopted in which a 0IIK device is provided and the 1IIIIII device controls the amount of current flowing to the heating element in accordance with the amount of variation in the molten metal held in the container. In this way, the temperature of the molten metal can be adjusted with even greater precision.
［作用］
本発明にかかる金属溶湯の加熱方法では、電極部と金属
溶湯との間に電圧を印加し、発熱体の肉厚方向に電流を
流して発熱体をＳ温に発熱させる。[Function] In the method for heating molten metal according to the present invention, a voltage is applied between the electrode portion and the molten metal, and a current is passed in the thickness direction of the heating element to cause the heating element to generate heat to S temperature.
すると、発熱体の熱は金属溶湯に伝達され、金属溶湯は
加熱される。この場合、金属溶湯を加熱するのは発熱体
のため、放熱面積を確保することができ、発熱体の熱は
効果的に金ｍ溶湯に伝達される。Then, the heat of the heating element is transferred to the molten metal, and the molten metal is heated. In this case, since the heating element heats the molten metal, a heat radiation area can be ensured, and the heat of the heating element is effectively transferred to the molten gold.
［実施例〕
本、発明にかかる金属溶湯の加熱方法を鉄鋼の連続鋳造
方法に適用した第１実施例について説明する。[Example] A first example in which the method for heating molten metal according to the present invention is applied to a method for continuous casting of steel will be described.
まず、連続鋳造方法で使用する達￥ｋｖＩ造装置につい
て説明する。この連続鋳造装置は、第１図に示すように
、鉄！ｌ ｍ ｔＱを保持する容器としてのタンデツシ
ュ１と、タンデツシュ１よりも下方に配置された水冷鋳
型２と、二次冷却スプレー帯３と、ピンチロール４と、
整直ロール５とで構成されている。なお、タンデツシュ
１は、清濁を５を程度 ゛保持する容量である。First, the production equipment used in the continuous casting method will be explained. As shown in Figure 1, this continuous casting equipment is made of iron! A tundish 1 as a container holding l m tQ, a water-cooled mold 2 disposed below the tundish 1, a secondary cooling spray zone 3, a pinch roll 4,
It is composed of a straightening roll 5. Note that the tundish 1 has a capacity to hold about 5 degrees of turbidity.
本実施例で使用する第１のヒータ装置６及び第２のヒー
タ装ｆｉｌ！９を第２図および第３図に示す。The first heater device 6 and the second heater device fil! used in this embodiment! 9 is shown in FIGS. 2 and 3.
第１のヒータ［ｆＭ６は、ジルコニアとマグネシアとを
主成分とする筒状をなす発熱体７と、発熱体７の中央孔
にカーボンを装填して形成された電極部８とで構成され
ている。電極部８には端子８ａが突出している。The first heater [fM6 is composed of a cylindrical heating element 7 whose main components are zirconia and magnesia, and an electrode part 8 formed by filling a central hole of the heating element 7 with carbon. . A terminal 8a protrudes from the electrode portion 8.
第２のヒータ装置９は、第１のヒータ装置６と路間−の
構成であり、ジルコニアとマグネシアを主成分とする筒
状をなす発熱体１０と、発熱体１０の中央孔にカーボン
を装填して形成された電極部１１とで構成されている。The second heater device 9 has a configuration between the first heater device 6 and the path, and includes a cylindrical heating element 10 mainly composed of zirconia and magnesia, and a central hole of the heating element 10 loaded with carbon. The electrode portion 11 is formed by using the electrode portion 11 formed as shown in FIG.
電極部１１には端子１１ａが突出している。A terminal 11a protrudes from the electrode portion 11.
次に連続鋳造する際について説明する。まず、発熱体７
および発熱体１０をバーナ等の加熱装置で１３００’Ｃ
程度に予熱する。このように発熱体７および発熱体１０
を予熱すれば、ジルコニアとマグネシアとを主成分とす
る発熱体７および発熱体１０の導電性を確保できる。こ
のように発熱体７および発熱体１０を予熱した状態で、
とりべ３０から移されてタンデイシュ１に保持されてい
る１４００〜１６００℃程度の高温の鉄鋼の溶湯に、ヒ
ータ装置６およびヒータ装置９を浸漬する。浸漬した状
態を第３図に示す。Next, continuous casting will be explained. First, heating element 7
And the heating element 10 is heated to 130'C using a heating device such as a burner.
Preheat to moderate temperature. In this way, the heating element 7 and the heating element 10
By preheating, the conductivity of the heating elements 7 and 10, which are mainly composed of zirconia and magnesia, can be ensured. With the heating elements 7 and 10 preheated in this way,
The heater device 6 and the heater device 9 are immersed in molten steel at a high temperature of about 1400 to 1600° C. which is transferred from the ladle 30 and held in the tundish 1. Figure 3 shows the immersed state.
ところで、発熱体７および発熱体１０に亀裂が生じた場
合には、金属溶湯と電極部８、Ｗｉ極部１１とが直接に
導通し、発熱体７おにび発熱体１０の発熱量が極めて小
さくなり、ヒータ″装置６およびヒータ！装置９を有効
に利用できない問題が生じる。この点、前記のように溶
湯に浸漬する前にヒータ装置６およびヒータ装置９を予
熱すれば、発熱体７および発熱体１０の急熱を防止でき
る。よって発熱体７および発熱体１０に亀裂が生じるこ
とを極力抑制することができる。By the way, if a crack occurs in the heating element 7 and the heating element 10, the molten metal and the electrode part 8 and the Wi pole part 11 are directly electrically connected, and the calorific value of the heating element 7 and the heating element 10 becomes extremely large. This causes the problem that the heater device 6 and the heater device 9 cannot be used effectively.In this regard, if the heater device 6 and the heater device 9 are preheated before immersion in the molten metal as described above, the heating element 7 and Rapid heating of the heating element 10 can be prevented. Therefore, generation of cracks in the heating element 7 and the heating element 10 can be suppressed as much as possible.
上記のようにヒータ装置６およびヒータ装置９を溶湯に
浸漬した状態で、端子８ａと端子１１ａとを交流電源に
接続し、端子８ａと端子１１ａとの間に電圧を印加する
。これによりタンデイシュ１に保持されている溶湯を介
してヒータ装ぼ６の発熱体７とヒータ装置９の発熱体１
０との間で電流を流す。この場合電圧は１００〜６００
ｖ程度、電流１１は２００〜４００Ａ程度である。この
ときジルコニアを主成分とする発熱体７および発熱体１
０は、へ渇に発熱する。したがってタンデツシュ１内に
保持された溶湯は、加熱されて約１〜３０℃昇温し、湿
度調節される。With the heater device 6 and the heater device 9 immersed in the molten metal as described above, the terminal 8a and the terminal 11a are connected to an AC power source, and a voltage is applied between the terminal 8a and the terminal 11a. As a result, the molten metal held in the tundish 1 is transferred to the heating element 7 of the heater casing 6 and the heating element 1 of the heater device 9.
A current is passed between 0 and 0. In this case the voltage is 100-600
The current 11 is about 200 to 400 A. At this time, a heating element 7 and a heating element 1 mainly composed of zirconia
0 is fever due to thirst. Therefore, the molten metal held in the tundish 1 is heated to a temperature of about 1 to 30°C, and the humidity is controlled.
以上説明したように本実施例にかかる加熱方法では、ヒ
ータ装置６の発熱体７、ヒータ装置９の発熱体１０の発
熱量で溶湯を加熱するため、従来より提供されている溶
湯自体に直接電流を流して溶湯自体に発生したジュール
熱で溶湯を発熱させる方法に比較して、必要とする電源
用は小であり、したがってその電気的制御も行ない易い
。As explained above, in the heating method according to this embodiment, in order to heat the molten metal with the calorific value of the heating element 7 of the heater device 6 and the heating element 10 of the heater device 9, a direct current is applied to the molten metal itself, which is conventionally provided. Compared to the method of causing the molten metal to generate heat using the Joule heat generated in the molten metal itself, the power supply required is small, and therefore, it is easy to electrically control the molten metal.
また本実施例にかかる方法では、発熱体７および発熱体
１０は面状のため表面積が大きくつまり放熱面積が大き
い。よって発熱体７および発熱体１０に熱がこもること
を極力抑制することができる。したがって発熱体７およ
び発熱体１０の熱に・ よる亀裂、破損の抑制に有利で
ある。故に本実施例では発熱体７、発熱体１０の耐熱温
度が低い場合でもよく、したがって発熱体７、発熱体１
０を形成する導電性セラミックス材料の種類を、耐熱温
度が低いものまで拡大することができる。Furthermore, in the method according to this embodiment, the heating elements 7 and 10 have a planar shape and therefore have a large surface area, that is, a large heat dissipation area. Therefore, heat buildup in the heat generating elements 7 and 10 can be suppressed as much as possible. Therefore, it is advantageous to suppress cracking and damage of the heating elements 7 and 10 due to heat. Therefore, in this embodiment, the heat generating elements 7 and 10 may have a low heat resistance temperature.
The types of conductive ceramic materials that form 0 can be expanded to include materials with low heat resistance.
上記したようにタンデイシュ１内で温１１ｍ整された溶
湯は、タンデイシュ１の吐出口１０ａから吐出され、水
冷鋳型２で冷却固化され、さらにスプレー帯３からの冷
却水の噴出で冷却され、冷却固化したものはピンチロー
ル４で下方に引張られる。その後は切ｉｌｌにより所定
の長さに１．７７断される。The molten metal adjusted to a temperature of 11 m in the tundish 1 as described above is discharged from the discharge port 10a of the tundish 1, cooled and solidified in the water-cooled mold 2, further cooled by a jet of cooling water from the spray zone 3, and cooled and solidified. It is pulled downward by the pinch rolls 4. Thereafter, it is cut to a predetermined length by cutting ill.
（第２実施例）
本発明の第２実施例について第４図を参照して説明する
。本実施例にかかるヒータ装置１３は、パネル形であり
、カーボンを主成分とする板状電極部１４と、板状電極
部１４を被覆するジルコニアを主成分とする発熱体１５
とで形成されている。(Second Embodiment) A second embodiment of the present invention will be described with reference to FIG. 4. The heater device 13 according to the present embodiment is panel-shaped, and includes a plate-shaped electrode part 14 mainly composed of carbon, and a heating element 15 mainly composed of zirconia that covers the plate-shaped electrode part 14.
It is formed by.
（第３実施例）
本発明の第３実施例について第５図を参照して説明する
。本実施例にかかると一タ￥Ａｒａ１６は、タンデツシ
ュ１の内壁を形成するアルミナ、マグネシアなどの内張
り材１Ｃに埋設されている。このヒータ１６は、カーボ
ンを主成分とした板状の電極部１７と、電＃Ａ部１７の
片面を被覆するジルコニアを主成分とする発熱体１８と
で形成されている。発熱体１８はタンデツシュ１の内面
に露出しており、タンデツシュ１内に保持された溶湯に
接触づる。電極部１７の他方の片面は、タンデツシュ１
の内張り材１Ｃで被覆され絶縁されている。(Third Embodiment) A third embodiment of the present invention will be described with reference to FIG. 5. According to this embodiment, the Ara 16 is embedded in the lining material 1C, such as alumina or magnesia, which forms the inner wall of the tandesh 1. This heater 16 is formed of a plate-shaped electrode portion 17 mainly made of carbon and a heating element 18 mainly made of zirconia and covering one side of the electrode #A portion 17. The heating element 18 is exposed on the inner surface of the tundish 1 and comes into contact with the molten metal held within the tundish 1. The other side of the electrode part 17 is connected to the tundish 1.
It is covered and insulated with a lining material 1C.
（第４実施例）
本発明の第４実施例について第６図〜第８図を参照して
説明する。本実施例も鉄鋼の連続鋳造法に使用するタン
デツシュ装置に適用したものである。本実施例では、ヒ
ータ装置２０は、パネル形であり、カーボンで形成され
た板状電極部２１と、板状Ｔｉ極部２１に被覆されたジ
ルコニアを主成分とする発熱体２２とで形成されている
。板状ｆｆ１ｓ部２１は、アルミナからなる絶縁体２１
０、絶縁体２１１で区切られ、電極体２１２、電極体２
１３、電極体２１４とに三分割されている。電極体２１
２、電極体２１３、電極体２１４には夫々、端子２１２
ａ、端子２１３ａ、端子２１４ａが突出している。(Fourth Embodiment) A fourth embodiment of the present invention will be described with reference to FIGS. 6 to 8. This embodiment is also applied to a tundish device used in a continuous casting method for steel. In this embodiment, the heater device 20 is panel-shaped and is formed of a plate-shaped electrode part 21 made of carbon and a heating element 22 mainly composed of zirconia coated on the plate-shaped Ti electrode part 21. ing. The plate-shaped ff1s portion 21 is an insulator 21 made of alumina.
0, separated by an insulator 211, electrode body 212, electrode body 2
13 and an electrode body 214. Electrode body 21
2. The electrode body 213 and the electrode body 214 each have a terminal 212
a, the terminal 213a, and the terminal 214a protrude.
第２のヒータ装置２４は、第１のヒータ！装置２０と路
間−の構成であり、カーボンで形成された板状電極部２
５と、ジルコニアを主成分とづる発熱体２６とで構成さ
れている。板状電極７ｍ２５は、アルミナからなる絶縁
体２５０、絶縁体２５１で区切られ、電極体２５２、′
Ｆ１極体２５３、電極体２５４とに三分割されている。The second heater device 24 is the first heater! It has a configuration between the device 20 and the path, and a plate-shaped electrode part 2 made of carbon.
5 and a heating element 26 whose main component is zirconia. The plate-shaped electrode 7m25 is separated by an insulator 250 and an insulator 251 made of alumina, and electrode bodies 252,'
It is divided into three parts, an F1 pole body 253 and an electrode body 254.
電極体２５２、電極体２５３、電極体２５４には夫々、
端子２５２ａ１端子２５３ａ、端子２５４ａが突出して
いる。The electrode body 252, the electrode body 253, and the electrode body 254 each include
Terminal 252a1, terminal 253a, and terminal 254a protrude.
なあ、板状？１！極部２１、板状電極部２５のうち、発
熱体２２、発熱体２６に接触していない部分には、電気
絶縁材料からなる絶縁Ｍ２１ａ１２５ａが被覆されてい
る。Hey, plate-like? 1! The portions of the pole portion 21 and the plate-shaped electrode portion 25 that are not in contact with the heating element 22 and the heating element 26 are covered with an insulation M21a125a made of an electrically insulating material.
次に使用に際しては、まず、第６図に示すように第１の
ヒータ装置２０において、端子２１２ａと端子２１４ａ
とを交流電源に接続して、発熱体２２を介して電極体２
１２と電極体２１４との間で１００〜６００ｖの電圧で
、１００Ａ〜１ＫＡの電流を流し、これにより発熱体２
２を発熱し、もって発熱体２２を１３００℃程度に予熱
する。Next, in use, first, as shown in FIG. 6, in the first heater device 20, the terminal 212a and the terminal 214a are
and the electrode body 2 via the heating element 22.
12 and the electrode body 214 at a voltage of 100 to 600 V and a current of 100 A to 1 KA.
2 generates heat, thereby preheating the heating element 22 to about 1300°C.
Ｊｒ１様に、第２のヒータ装置２４において、端子２５
２ａと端子２５４ａとを交流電源に接続して、発熱体２
６を介して電極体２５２と電（に体２５４との間で１０
０〜６００ｖの電圧で、１００Ａ〜１ＫＡの電流を流し
、これにより発熱体２６を発熱し、もって発熱体２６を
１３００℃゛稈度に予熱プる。For Mr. Jr1, in the second heater device 24, the terminal 25
2a and the terminal 254a are connected to an AC power source, and the heating element 2
10 between the electrode body 252 and the electrode body 254 via the
A current of 100 A to 1 KA is passed at a voltage of 0 to 600 V, thereby generating heat in the heating element 26, thereby preheating the heating element 26 to a temperature of 1300 DEG C.
このように予熱した状態の装−９３ｍ置２０およびヒー
タ装置２４を溶湯に浸漬すれば、発熱体２２、発熱体２
６の急熱を抑υ［でき、発熱体２２、発熱体２６の亀裂
抑制の面で有利である。上記のようにヒータ［４２０お
よびヒータ装ｒ１１２４を溶湯に浸漬した状態で、第７
図に示すように、ヒータ装置２ｏの端子２１２ａ、２１
３ａ１２１４ａを交流電源に接続するともに、ヒータ装
置２４の端子２５２ａ、２５３ａ、２５４ａを交流電源
に接続し、これにより溶湯を介してヒータＨｅ２０とヒ
ータ装置２４との間に電流を−し、発熱体２２、発熱体
２６をＩｋｌ温に発熱させ、以って？Ｆｌ潟を加熱する
。If the apparatus 93 m height 20 and the heater apparatus 24 in the preheated state are immersed in the molten metal, the heating element 22 and the heating element 2
This is advantageous in terms of suppressing cracks in the heating elements 22 and 26. With the heater [420 and heater equipment r1124 immersed in the molten metal as described above, the seventh
As shown in the figure, terminals 212a, 21 of the heater device 2o
3a1214a is connected to an AC power source, and the terminals 252a, 253a, and 254a of the heater device 24 are connected to an AC power source, thereby passing a current between the heater He20 and the heater device 24 through the molten metal, and heating the heating element 22. , the heating element 26 is heated to Ikl temperature, and then ? Heat the Fl lagoon.
この実施例では、第８図に示すように、溶湯はとりべ３
０からタンデツシュ１の注入口１ａに注入され、タンデ
ツシュ１の底壁に形成されている吐出孔１０ａに向けて
矢印Ｘ方向に流れるもので′・。In this example, as shown in FIG.
0 into the injection port 1a of the tundish 1 and flows in the direction of the arrow X toward the discharge hole 10a formed in the bottom wall of the tundish 1.
ある。この実施例では、ヒータ装ｒ１２０およびヒータ
装置２４は溶湯の流れとほぼ平行に配置して′°τニー
；：ン、１．。ＧＣｌｅｌＸｉ［２ｃｌ溶濶の流れとほ
ぼ直角の状態に配ｄするととらに、ヒータ装置２４をダ
ン゛プッシュ１の内壁面に埋設してもよい。この場合に
は、タンデツシュ１の注入口１ａに注入された溶湯は、
ヒータ装Ｍ２０とタンデツシュ１の底壁との間を通って
吐出口１０ａに流れる。be. In this embodiment, the heater device 120 and the heater device 24 are arranged substantially parallel to the flow of the molten metal. . The heater device 24 may be embedded in the inner wall surface of the dump push 1 in addition to being disposed substantially perpendicular to the flow of the GCleIXi[2cl melt. In this case, the molten metal injected into the injection port 1a of the tandesh 1 is
It flows between the heater device M20 and the bottom wall of the tundish 1 to the discharge port 10a.
（第５実施例）
本発明の第５実施例について第１０図を参照して説明す
る。本実施例も鉄鋼の連続鋳造法に使用されるタンデイ
ツシュ装置に適用したものである。(Fifth Embodiment) A fifth embodiment of the present invention will be described with reference to FIG. 10. This embodiment is also applied to a tundish device used in a continuous casting method for steel.
、本実施例で使用づるヒータ装置４８は、棒状の炭素製
の電極部４９と、キャップタイプの発熱体５０とで形成
されている。ヒータ装置５１は、棒状の炭ｊｌ製の電極
部５２と、キャップタイプの発熱体５３とで形成されて
いる。発熱体５０．５３はキＶツブタイプであり、その
内周部にめねじが形成されており、電極部４９．５２の
先端のおねじ部にねじこむことにより取着されている。The heater device 48 used in this embodiment is formed of a rod-shaped carbon electrode portion 49 and a cap-type heating element 50. The heater device 51 is formed of a rod-shaped electrode portion 52 made of charcoal and a cap-type heating element 53. The heating element 50.53 is a V-shaped type, has a female thread formed on its inner circumference, and is attached by screwing into the male thread at the tip of the electrode part 49.52.
この場合にも、電極部４９．５２の表面のうち、発熱体
５０．５３に接触しない部位には、アルミナとマグネシ
アとからなる絶縁膜が被覆されている。Also in this case, a portion of the surface of the electrode portion 49.52 that does not come into contact with the heating element 50.53 is coated with an insulating film made of alumina and magnesia.
［発明の効ｒＡ］
本実施例にかかる金属溶湯の加熱方法によれば、発熱体
の発熱により、容器内に保持されている金属溝；ｇの温
度調整を行なうことができる。したがって本発明にがか
る全屈溶湯の加熱方法を、連続鋳造法におけるタンデツ
シュ内に保持した溶層を加熱づる場合に適用したとぎに
は、タンデツシュの下方に配置しである水冷鋳型へ金属
溶湯を適切な温度で供給することができ、したがって連
続鋳造法で製造した金属製品の品質を向上させることが
できる。[Effects of the Invention rA] According to the method for heating molten metal according to this embodiment, the temperature of the metal groove g held in the container can be adjusted by the heat generated by the heating element. Therefore, when the method of heating a fully flexed molten metal according to the present invention is applied to heating a molten layer held in a tundish in a continuous casting method, the molten metal can be properly heated to a water-cooled mold placed below the tundish. Therefore, the quality of metal products manufactured by the continuous casting method can be improved.
また、本発明にかかる金属溶湯の加熱方法では、容器内
に保持されている金属溶湯を加熱する発熱体は電流を流
す厚さ方向に対して金属溶湯と接続する表面積が大きい
発熱体である。したがって、その発熱体の成熱面積を確
保でき、発熱体の内部に熱をこもりにくくすることがで
きる。よって発熱体の亀裂、破損抑も１１に右利である
。Furthermore, in the method for heating molten metal according to the present invention, the heating element that heats the molten metal held in the container is a heating element that has a large surface area connected to the molten metal in the thickness direction in which the current flows. Therefore, the heating area of the heating element can be secured, and it is possible to prevent heat from being trapped inside the heating element. Therefore, cracks and damage to the heating element are also suppressed to the 11th advantage.
又、本発明にかかる金属清潔の加熱方法では、発熱体に
熱をこもりにくくすることができるので、金属溶場を加
熱している際に、発熱体の内部温度をイれだけ低くする
ことができ、発熱体を形成する発熱材料の種類を耐熱温
度の低い材料にまで拡大することができる。In addition, in the heating method for cleaning metal according to the present invention, it is possible to make it difficult for heat to be trapped in the heating element, so it is possible to reduce the internal temperature of the heating element as much as possible while heating the metal melting field. This makes it possible to expand the types of heat-generating materials that form the heat-generating element to include materials with low heat resistance.
図面は本発明にかかる加熱部をもつ金属溶湯容器の各実
施例を示し、第１図は連続鋳造をしている状ｆｘのＪ１
明図、第２図は第′１実施例にかがるヒータ装置の斜視
図、第３図は溶湯を加熱している状態の概略断面図であ
り、第４図は第２実施例にがかるヒータ￥装置の斜視図
、第５図は第３実施例にがかるヒータ￥装置の断面図で
ある。第６図〜第８図は第４実施例を示し、第６図はヒ
ータ装置の斜視図、第７図はピーク装置間で通電してい
る状態の斜視図、第８図はヒータ装置を溶湯に浸漬して
いる状態の平面図である。第９図はヒータ装置を溶湯に
浸漬している状態の切倒の平面図である。
第１０図は第５実施例にかかる使用状態説明図である。
図中、１はタンデツシュ（容器）、６は第１のヒータ装
置、７は発熱体、８は電極部、９（よ第２のヒータ装置
、１ｏは発熱体、１１は電極部、１３はヒータ装置、１
４は電極部、１５は発熱体、１６はヒータ装置、１７は
電極部、１８は発熱体、２０はヒータ！装置、２１はＴ
ｉ極部、２２は発熱体、２４はヒータ装置、２５は電極
部、２６は発熱体を示す。
特ｒ［出願人 愛知製鋼株式会社
代理人 弁理士 大川 宏
シ
第５図
第６図 第７図
第８図 第９図
手 続 補 正 内 （自発）１、’ｆＳｆ
’ｌの表示
ｌｌｎｍ６２ｆ特二’ｔ ｍ第１５７１７３＠２．１、
発明の名称
金属溶湯の加熱方法
３、補正をする者
ｌ５ｆｆとの１係 特許出願人
愛知県東海市荒尾町ワノ割１番地
愛知製鋼株式会社
代表者 天 野 益 夫
４、代野人
〒４５Ｏｆｌ知県名古屋市中Ｈ区名駅３丁１１］３２ｆ
ｔの４児玉ピル３Ｆ（１話＜ ０５２＞ ５８３−９７
２０）６６補正の内容
（１）明細書の第７ページ第４〜５行目に［その固有・
・・程度のもの］とあるをｒ１５００℃の時の固有抵抗
値ρが１ Ｘ １０’〜５ｘ１０’ （Ωｃｍ）程度
のもの」に訂正する。
（２）明細書の第１３ページ第１８〜１９行口に「ジル
コニア」とあるを「マグネジ・アＪに訂正する。
（３）明ｌｌｌ１書の第１／ｌページ第６〜７ ｔｌｌ
ＩＩに「ジルコニア」とあるを１マグネシア」に訂ｉＦ
、する。
（４）明細内の第１４ページ第１８１ｊ口に［ジルコニ
ア］とあるを「マグネシア」にＶ１正する。
（５）明細書の第１５ページ第８行目に「ジルコニア」
とあるを「マグネシア」に訂正する。The drawings show various embodiments of the molten metal container having a heating section according to the present invention, and FIG. 1 shows J1 of fx in continuous casting.
2 is a perspective view of the heater device according to the first embodiment, FIG. 3 is a schematic cross-sectional view of a state in which molten metal is heated, and FIG. 4 is a perspective view of the heater device according to the first embodiment. FIG. 5 is a perspective view of the heater device, and FIG. 5 is a sectional view of the heater device according to the third embodiment. 6 to 8 show the fourth embodiment, FIG. 6 is a perspective view of the heater device, FIG. 7 is a perspective view of the state in which electricity is applied between the peak devices, and FIG. FIG. FIG. 9 is a plan view of the cut-down state in which the heater device is immersed in molten metal. FIG. 10 is an explanatory diagram of the usage state according to the fifth embodiment. In the figure, 1 is a tundish (container), 6 is a first heater device, 7 is a heating element, 8 is an electrode part, 9 is a second heater device, 1o is a heating element, 11 is an electrode part, 13 is a heater device, 1
4 is an electrode part, 15 is a heating element, 16 is a heater device, 17 is an electrode part, 18 is a heating element, and 20 is a heater! device, 21 is T
22 is a heating element, 24 is a heater device, 25 is an electrode portion, and 26 is a heating element. Special r [Applicant Aichi Steel Co., Ltd. Agent Patent Attorney Hiroshi Okawa Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Procedures Amendments (Voluntary) 1, 'fSf
'l display llnm62f special 2't m No. 157173@2.1,
Title of the invention: Method for heating molten metal 3, person making amendments: 15ff Patent applicant: 1 Wanowari, Arao-cho, Tokai-shi, Aichi Prefecture Representative: Masu Amano Masuo Amano 4, Mr. Daino 〒45 Ofl Chi-ken 3-11 Meieki, Naka-H Ward, Nagoya City] 32F
T's 4 Kodama Pill 3F (Episode 1 <052> 583-97
20) Contents of the 66 Amendment (1) In the 4th to 5th lines of page 7 of the specification,
. . .] is corrected to "A product with a specific resistance value ρ of about 1 x 10' to 5 x 10' (Ωcm) at r1500°C." (2) On page 13, lines 18-19 of the specification, the word "zirconia" is corrected to "Magnesia J." (3) Page 1/1 of book 1, pages 6-7
In II, "zirconia" was revised to "1 magnesia" iF
,do. (4) Correct the word [zirconia] at the 181j entry on the 14th page of the specification to "magnesia" by V1. (5) "Zirconia" on page 15, line 8 of the specification
Correct the statement to "magnesia".
Claims (4)
熱体と該発熱体の他面に設けられた電極部からなるヒー
タ装置を使用し、該電極部と該金属溶湯との間に電圧を
印加して該発熱体の肉厚方向に電流を流して発熱させ発
熱して高温となつた該ヒータ装置で該金属溶湯を加熱す
ることを特徴とする金属溶湯の加熱方法。(1) Using a heater device consisting of a heating element whose one side is in contact with the molten metal held in a container and an electrode part provided on the other side of the heating element, and between the electrode part and the molten metal. 1. A method for heating molten metal, which comprises applying a voltage and passing a current in the thickness direction of the heating element to generate heat, thereby heating the molten metal using the heater device, which reaches a high temperature.
あり、上方から注入された金属溶湯を一時的に貯溜し金
属溶湯が吐出される吐出口をもつ特許請求の範囲第１項
記載の金属溶湯の加熱方法。(2) The container is a tundish used in a continuous casting method, and has a discharge port for temporarily storing molten metal poured from above and discharging the molten metal. Method of heating molten metal.
請求の範囲第３項記載の金属溶湯の加熱方法。(3) The method for heating molten metal according to claim 3, wherein the heating element is mainly composed of conductive ceramics.
る特許請求の範囲第３項記載の金属溶湯の加熱方法。(4) The method for heating molten metal according to claim 3, wherein the heating element mainly contains zirconia and magnesia.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62157173A JPH0667539B2 (en) | 1987-06-24 | 1987-06-24 | Method of heating molten metal |
| US07/208,055 US4849014A (en) | 1987-06-24 | 1988-06-17 | Molten metal heating method |
| EP88109932A EP0296562B1 (en) | 1987-06-24 | 1988-06-22 | A casting system |
| DE88109932T DE3885011T2 (en) | 1987-06-24 | 1988-06-22 | Casting system. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62157173A JPH0667539B2 (en) | 1987-06-24 | 1987-06-24 | Method of heating molten metal |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPS642768A JPS642768A (en) | 1989-01-06 |
| JPH012768A true JPH012768A (en) | 1989-01-06 |
| JPH0667539B2 JPH0667539B2 (en) | 1994-08-31 |
Family
ID=15643783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62157173A Expired - Lifetime JPH0667539B2 (en) | 1987-06-24 | 1987-06-24 | Method of heating molten metal |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4849014A (en) |
| EP (1) | EP0296562B1 (en) |
| JP (1) | JPH0667539B2 (en) |
| DE (1) | DE3885011T2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPN595095A0 (en) * | 1995-10-16 | 1995-11-09 | Bhp Steel (Jla) Pty Limited | Heating molten metal |
| DE10337685B4 (en) * | 2003-08-16 | 2008-02-28 | Kraussmaffei Technologies Gmbh | Heatable tool |
| JP5621214B2 (en) * | 2009-05-15 | 2014-11-12 | 新日鐵住金株式会社 | Ladle for continuous casting and continuous casting method |
| JP5730521B2 (en) * | 2010-09-08 | 2015-06-10 | 株式会社日立ハイテクノロジーズ | Heat treatment equipment |
| JP6578139B2 (en) * | 2015-06-15 | 2019-09-18 | 助川電気工業株式会社 | Electric furnace for molten metal water heater |
| JP7244445B2 (en) * | 2020-02-04 | 2023-03-22 | 三建産業株式会社 | Melting furnace for non-ferrous metals and holding furnace for non-ferrous metals |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB378171A (en) * | 1930-07-17 | 1932-08-11 | Emilien Bornand | Improvements in or relating to casting ladles |
| US3160497A (en) * | 1962-11-15 | 1964-12-08 | Loung Pai Yen | Method of melting refractory metals using a double heating process |
| FR1533262A (en) * | 1966-05-17 | 1968-07-19 | Alusuisse | Method and device for molten oxide electrolysis |
| PH12717A (en) * | 1979-05-09 | 1979-07-25 | J Lee | Electrically resistant heat generating furnace |
| JPS61150758A (en) * | 1984-12-25 | 1986-07-09 | Kawasaki Steel Corp | Method for heating molten metal in tundish for continuous casting |
| FR2604846B1 (en) * | 1986-10-03 | 1993-11-19 | Electricite De France | DIRECT CONDUCTION ELECTROTHERMAL GENERATOR |
-
1987
- 1987-06-24 JP JP62157173A patent/JPH0667539B2/en not_active Expired - Lifetime
-
1988
- 1988-06-17 US US07/208,055 patent/US4849014A/en not_active Expired - Fee Related
- 1988-06-22 EP EP88109932A patent/EP0296562B1/en not_active Expired - Lifetime
- 1988-06-22 DE DE88109932T patent/DE3885011T2/en not_active Expired - Fee Related
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